In a sound wave, molecules of air become more closely spaced and less closely spaced as the air is disturbed. sound waves are

a. transverse, mechanical waves
b. longitudinal, mechanical waves
c. transverse, non-mechanical waves
d. longitudinal, non-mechanical waves

Which graph represents motion with an object with positive velocity that is located at a position of 3 meters at a time of 0 seconds? a) a b) bb eliminate c) c d) d

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?

It is really hard for me right know